Revert of Remove the deprecated EncodeInternal interface from AudioEncoder

webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <memory>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.h"
 #include "webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h"
 
 using ::testing::Return;
 using ::testing::_;
 using ::testing::SetArgPointee;
 using ::testing::InSequence;
 using ::testing::Invoke;
 using ::testing::MockFunction;
 
 namespace webrtc {
 
 namespace {
+static const size_t kMockMaxEncodedBytes = 1000;
 static const size_t kMaxNumSamples = 48 * 10 * 2;  // 10 ms @ 48 kHz stereo.
 }
 
 class AudioEncoderCopyRedTest : public ::testing::Test {
  protected:
   AudioEncoderCopyRedTest()
       : mock_encoder_(new MockAudioEncoder),
         timestamp_(4711),
         sample_rate_hz_(16000),
         num_audio_samples_10ms(sample_rate_hz_ / 100),
         red_payload_type_(200) {
     AudioEncoderCopyRed::Config config;
     config.payload_type = red_payload_type_;
     config.speech_encoder = std::unique_ptr<AudioEncoder>(mock_encoder_);
     red_.reset(new AudioEncoderCopyRed(std::move(config)));
     memset(audio_, 0, sizeof(audio_));
     EXPECT_CALL(*mock_encoder_, NumChannels()).WillRepeatedly(Return(1U));
     EXPECT_CALL(*mock_encoder_, SampleRateHz())
         .WillRepeatedly(Return(sample_rate_hz_));
+    EXPECT_CALL(*mock_encoder_, MaxEncodedBytes())
+        .WillRepeatedly(Return(kMockMaxEncodedBytes));
   }
 
   void TearDown() override {
     EXPECT_CALL(*mock_encoder_, Die()).Times(1);
     red_.reset();
   }
 
   void Encode() {
     ASSERT_TRUE(red_.get() != NULL);
     encoded_.Clear();
@@ skipping 239 matching lines @@
   config.speech_encoder = NULL;
   EXPECT_DEATH(red = new AudioEncoderCopyRed(std::move(config)),
                "Speech encoder not provided.");
   // The delete operation is needed to avoid leak reports from memcheck.
   delete red;
 }
 
 #endif  // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
 
 }  // namespace webrtc